Classifications

• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
  • A44B19/00—Slide fasteners
  • A44B19/24—Details
  • A44B19/26—Sliders
• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
  • A44B19/00—Slide fasteners
  • A44B19/02—Slide fasteners with a series of separate interlocking members secured to each stringer tape
  • A44B19/08—Stringers arranged side-by-side when fastened, e.g. at least partially superposed stringers
• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
  • A44B19/00—Slide fasteners
  • A44B19/24—Details
  • A44B19/32—Means for making slide fasteners gas or watertight
• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
  • A44B19/00—Slide fasteners
  • A44B19/24—Details
  • A44B19/34—Stringer tapes; Flaps secured to stringers for covering the interlocking members
• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
  • A44B19/00—Slide fasteners
  • A44B19/10—Slide fasteners with a one-piece interlocking member on each stringer tape
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T24/00—Buckles, buttons, clasps, etc.
  • Y10T24/25—Zipper or required component thereof
  • Y10T24/2514—Zipper or required component thereof with distinct member for sealing surfaces

Definitions

• the present invention relates to a slide fastener.
• a type of related-art slide fastener comprises a pair of stringers, each including a flexible tape having first and second sides facing in opposite directions, and outer and inner longitudinal edges, and coupling elements attached to the first side of the tape, for engagement with corresponding coupling elements provided on the first side of the tape of the other stringer.
• a continuous coil-like coupling element is affixed to one side of the stringer tapes.
• the tapes are merely juxtaposed and the gap therebetween remains visible, with possible problems from an aesthetic point of view. Said gap can also pose problems in certain applications wherein at least some degree of water-tightness is desired or necessary.
• An object of the present invention is to provide an improved slide fastener of the previously defined kind, which allows the limitations and inconveniences of the prior art slide fasteners to be overcome.
• a slide fastener of the initially defined kind characterized in that in the disengaged condition of said coupling elements, inner longitudinal edge portions of the stringers project beyond the respective coupling elements, toward the other stringer, to an extent such that when the coupling elements are engaged with each other, said inner longitudinal edge portions of the stringers are engaged with one another in a substantially overlapped condition.
• the inner longitudinal edge portions of the stringers are superimposed one on the other, in a plane essentially parallel to the stringers.
• said inner longitudinal edge portions of the stringers are abutted one against the other in a plane essentially orthogonal to the stringers.
• a water-tight coating in particular of a polymer material, such as a polyurethane, is applied on said first side of the tapes.
• a further coating of a water-tight material in particular a polymer material, may be provided on the second side of the tapes.
• the arrangement is such that in the above-defined overlapped condition a water-tight coating on the first side of one tape is superimposed to the further water-tight coating provided on the second side of the other tape.
• Figure 1 is a schematic transverse cross- sectional view of stringers of a slide fastener according to the invention, showing the same in a first, partially overlapped condition;
• Figure 2 is a schematic transverse cross-sectional view of the stringers illustrated in Figure 1, showing the same in a second, overlapped condition;
• Figures 3 to 5 are schematic transverse cross- sectional views showing successive steps of a method for the manufacture of stringers for a slide fastener according to the present invention
• Figure 6 and 7 are schematic transverse cross-sectional views showing another fastener according to the invention in the open condition and in the closed condition, respectively;
• Figure 8 is a schematic transverse cross-sectional view showing an alternative embodiment
• Figure 9 is a transverse cross-sectional view showing the stringers of Figure 8 in an overlapped condition of use.
• a slide fastener according to the present invention is generally indicated 1.
• a vertical direction (an up and down direction) and a horizontal direction (a right and left direction) of the slide fastener 1 are determined with reference to Figure 1.
• An upper side refers to an upper side with respect to the paper surface of Figure 1
• a lower side refers to a lower side with respect to the paper surface of Figure 1
• a left side refers to a left side with respect to the paper surface of Figure 1
• a right side refers to a right side with respect to the paper surface of Figure 1.
• a longitudinal direction is a direction perpendicular to the paper surface of Figure 1.
• the slide fastener 1 comprises a pair of right and left fastener stringers 10, which are substantially mirror images of each other and lie in a general plane indicated A-A.
• the plane A-A is substantially parallel with the stringers 10.
• Each stringer 10 comprises a flexible fabric.
• a tape having a width of 12 to 16 mm is preferably used as the fabric, but the fabric may be a fabric which directly constitute a garment, a bag, or an article such as cover etc.
• a tape 11 will be described as an example of the fabric.
• the tape 11 has first and second sides 11a, l ib facing in opposite directions, and outer and inner edges 11c, l id extending in the longitudinal direction.
• the first side 11a is located at the lower side of the tape 11 and the second side l ib is located at the upper side of the tape 11.
• the inner edge l id means an edge located at a side close to the opposing tape 11.
• the outer edge 11c means an edge located at the opposite side opposite of the inner edge l id and located at a side away from the opposing tape 11.
• the tapes 11 can be woven or knitted or made of non- woven fabrics or laminates, and the like.
• a coating layer 12 of a water-tight material can be provided on the first side 11a of each tape 11.
• Such a coating may be conveniently made of a polymer material, and can be laminated onto the respective tape.
• the coating 12 can be applied onto the first side 11a of the tapes 11 by other known methods, for instance by a plasma- spraying technique.
• the tapes 11 can have a thickness of, for instance, about 0.3 mm, and the coating layers 12 possibly applied thereto are in general much thinner, their thickness being for instance of about 0.05 mm.
• the coupling elements 13 are in particular continuous, coil-like coupling elements, securely stitched to the tapes 11 by means of threads 14.
• the right and left coupling elements are configured to engage with or disengaged from each other.
• the coupling elements 13 are located at the lower side of the tape 11.
• Figure 4 shows a slide fastener as described above, illustrated in the open condition, i.e. in the mutually disengaged condition of the coupling elements 13.
• edge portions 10a of the stringers 10 extend beyond the respective coupling elements 13 is such that when elements 13 are engaged with each other, as shown in Figures 1 and 2, the edge portions 10a are engaged with one another in a substantially overlapped condition.
• the longitudinal edge portions 10a of the stringers 10 can be simply superimposed one on the other along a plane essentially parallel to the stringers 10. That is, the longitudinal edge portions 10a of the stringers 10 face each other in the up and down direction.
• the inner longitudinal edge portions 10a of the stringers 10 can be abutted one against the other, in a plane B-B essentially orthogonal to the plane A-A of the stringers 10. That is, the longitudinal edge portions 10a of the stringers 10 face each other in the right and left direction.
• a conventional slider of a known design not shown
• the edge portions 10a of the stringers 10 are more likely to become overlapped as shown in Figure 1, if desired such a slider can be easily arranged such as to ensure that the edge portions 10a of the stringers are overlapped as shown in Figure 2.
• the slide fastener 1 in the closed condition is substantially water-tight, particularly if the stringer tapes 11 are provided with respective coating layers 12.
• the water-tight coating 12 of the upper stringer abuts against the tape 11 of the lower stringer, and hinders the penetration of water from above to below the fastener, and vice versa
• the water-tight coating layers 12 of the two stringers abut one against the other like two sealing lips, hindering the penetration of water, in particular from above to below the slide fastener.
• the slide fastener 1 according to the invention provides a certain degree of water-tightness thanks to the overlap of the inner longitudinal edge portions of the stringers thereof.
• Such a configuration enhances the water-tightening effect when the slide fastener 1 is closed.
• the thickness of the further coating layer 15 is conveniently of the same order of magnitude as the layer 12.
• the slide fastener 1 described above can be manufactured by the method which will be now disclosed with particular reference to Figures 3 to 5.
• the tapes 11 are provided each with a respective water-tight coating layer 12, if desired.
• the inner longitudinal edges l id thereof may be conveniently sealed to protect them against fraying caused in use by the repeated use of the slider in opening and closing the slide fastener.
• the inner longitudinal edges l id thereof can be sealed for instance by means of a sonic blade.
• a pair of coupling elements 13 are affixed to the right and left tapes 11, on the respective side thereof which has been possibly provided with the water-tight coating 12.
• the coupling elements 13 are affixed to the tapes 11, at respective distances from the outer edges 11c thereof.
• a respective further coating layer 15 of a water-tight material is applied onto the second side lib of the tape 11, as shown in Figure 5.
• Such a further coating layer 15 contributes to the overall water-proofing effect and in particular prevents leakages of water through the stitches by which the couplings 13 are affixed to the stringers 10.
• the innermost edges l id of the tapes 11 may be slanted, as shown in Figure 6, though being at least approximately parallel with one another.
• the stringers 10 can be provided with the usual accessories, like a slider, end stops, etc., typical of slide fasteners.
• Figures 8 and 9 show a further embodiment.
• the watertight coating 12 provided on the first side 11a of each tape 11 has an inner edge portion 12a, which projects beyond the inner edge l id of the corresponding tape 11. Furthermore, the arrangement is such that in the closed condition of the fastener 1, shown in figure 9, basically only said inner edge portions 12a of the coating layers 12 are overlapped with one another, thus forming a double barrier preventing penetration of water from one side of the slide fastener to the other.
• Slide fasteners according to the present invention can be attached to pieces of apparel or other articles such that the coupling elements 13 face toward the lower side or, if preferred, toward the upper side.
• the coupling elements are barely discernible in the exterior appearance of a component of the garment or the other article when the slide fastener is closed.

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• Slide Fasteners (AREA)
• Control Of The Air-Fuel Ratio Of Carburetors (AREA)

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• 2011
  • 2011-11-22 IT IT001070A patent/ITTO20111070A1/it unknown
• 2012
  • 2012-11-22 DE DE112012004871.7T patent/DE112012004871B4/de active Active
  • 2012-11-22 WO PCT/IB2012/056623 patent/WO2013076678A1/en active Application Filing
  • 2012-11-22 TW TW101143777A patent/TWI584756B/zh active
  • 2012-11-22 CN CN201811131121.4A patent/CN109171121A/zh active Pending
  • 2012-11-22 US US14/359,927 patent/US9237783B2/en active Active
  • 2012-11-22 JP JP2014542974A patent/JP5952420B2/ja active Active
  • 2012-11-22 CN CN201280057274.3A patent/CN103945724A/zh active Pending

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